科技通报
科技通報
과기통보
BULLETIN OF SCIENCE AND TECHNOLOGY
2014年
8期
83-85
,共3页
自相关%网络攻击%成分分析%网络安全
自相關%網絡攻擊%成分分析%網絡安全
자상관%망락공격%성분분석%망락안전
autocorrelation%network attack%component analysis%network security
降质服务RoQ作为一种新型攻击方式，比传统的拒绝服务DoS攻击隐蔽性更强，传统检测方法难以实现高效定位检测攻击源。为快速准确地将攻击流分离检测，提出一种采用负熵作为目标函数，基于自相关成分分析的攻击流特征检测算法。建立自相关成分分析和RoQ攻击流特征盲源分离算法盲源分离数学模型，采用负熵目标函数，通过自适应调整分离系数，最终达到快速分离源信号的目的，实现了对RoQ攻击流特征分离和准确定，最后进行系统流程设计。实验对比表明，算法能很准确地实现攻击信号与合法信号的分离检测，攻击特征检测概率远高于传统算法的检测概率，检测性能具有明显提高。在计算机网络安全防护领域特别是对RoQ类攻击方面有很好的应用价值。
降質服務RoQ作為一種新型攻擊方式，比傳統的拒絕服務DoS攻擊隱蔽性更彊，傳統檢測方法難以實現高效定位檢測攻擊源。為快速準確地將攻擊流分離檢測，提齣一種採用負熵作為目標函數，基于自相關成分分析的攻擊流特徵檢測算法。建立自相關成分分析和RoQ攻擊流特徵盲源分離算法盲源分離數學模型，採用負熵目標函數，通過自適應調整分離繫數，最終達到快速分離源信號的目的，實現瞭對RoQ攻擊流特徵分離和準確定，最後進行繫統流程設計。實驗對比錶明，算法能很準確地實現攻擊信號與閤法信號的分離檢測，攻擊特徵檢測概率遠高于傳統算法的檢測概率，檢測性能具有明顯提高。在計算機網絡安全防護領域特彆是對RoQ類攻擊方麵有很好的應用價值。
강질복무RoQ작위일충신형공격방식，비전통적거절복무DoS공격은폐성경강，전통검측방법난이실현고효정위검측공격원。위쾌속준학지장공격류분리검측，제출일충채용부적작위목표함수，기우자상관성분분석적공격류특정검측산법。건립자상관성분분석화RoQ공격류특정맹원분리산법맹원분리수학모형，채용부적목표함수，통과자괄응조정분리계수，최종체도쾌속분리원신호적목적，실현료대RoQ공격류특정분리화준학정，최후진행계통류정설계。실험대비표명，산법능흔준학지실현공격신호여합법신호적분리검측，공격특정검측개솔원고우전통산법적검측개솔，검측성능구유명현제고。재계산궤망락안전방호영역특별시대RoQ류공격방면유흔호적응용개치。
Reduction of Quality (RoQ) attacking method a new means of network attack, it was more concealment than the traditional Denial of Service (DoS) attack, it was more difficult to achieve efficient detection result. Especially for the tradi-tional method, it was hard detection the detection source. For the fast and accurate attack detection and signal flow separa-tion, and optimal separation and detection of attack flows method was proposed with autocorrelation components analysis al-gorithm based on negative entropy objective function. Through the adaptive adjustment of separation parameters and the RoQ attacking feature was detected and located, finally, the system flow was designed. Simulation result shows that the new method has more perfect detection performance with lower error detection rate. It has prospective application value in RoQ network attack detection.
